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From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: ohad@wizery.com, bjorn.andersson@linaro.org
Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v7 1/3] rpmsg: core: Add wildcard match for name service
Date: Mon, 15 Jun 2020 15:38:57 -0600	[thread overview]
Message-ID: <20200615213859.443152-2-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20200615213859.443152-1-mathieu.poirier@linaro.org>

Adding the capability to supplement the base definition published
by an rpmsg_driver with a postfix description so that it is possible
for several entity to use the same service.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Acked-by: Suman Anna <s-anna@ti.com>
---
 drivers/rpmsg/rpmsg_core.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index a6361cad608b..5e01e8dede6b 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -399,7 +399,25 @@ ATTRIBUTE_GROUPS(rpmsg_dev);
 static inline int rpmsg_id_match(const struct rpmsg_device *rpdev,
 				  const struct rpmsg_device_id *id)
 {
-	return strncmp(id->name, rpdev->id.name, RPMSG_NAME_SIZE) == 0;
+	size_t len = min_t(size_t, strlen(id->name), RPMSG_NAME_SIZE);
+
+	/*
+	 * Allow for wildcard matches.  For example if rpmsg_driver::id_table
+	 * is:
+	 *
+	 * static struct rpmsg_device_id rpmsg_driver_sample_id_table[] = {
+	 *      { .name = "rpmsg-client-sample" },
+	 *      { },
+	 * }
+	 *
+	 * Then it is possible to support "rpmsg-client-sample*", i.e:
+	 *	rpmsg-client-sample
+	 *	rpmsg-client-sample_instance0
+	 *	rpmsg-client-sample_instance1
+	 *	...
+	 *	rpmsg-client-sample_instanceX
+	 */
+	return strncmp(id->name, rpdev->id.name, len) == 0;
 }
 
 /* match rpmsg channel and rpmsg driver */
-- 
2.25.1


  reply	other threads:[~2020-06-15 21:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15 21:38 [PATCH v7 0/3] rpmsg: core: Add support for name extension Mathieu Poirier
2020-06-15 21:38 ` Mathieu Poirier [this message]
2020-06-15 21:38 ` [PATCH v7 2/3] rpmsg: core: Add support to retrieve " Mathieu Poirier
2020-06-15 21:38 ` [PATCH v7 3/3] sample: rpmsg: Print out RPMSG device " Mathieu Poirier

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